Gun-barrel.



. ypreferably curved concentric 'UMTED STATES `PATENT OFFICE- HEINBICH RAYBIBA, ESSEN-RTTENSCBIEID, GERMANY, ASSIGNOR T FRIED. KRUPP AKTIENGESELLSCHAFT, ESSEN-ON-THE-RUHR, GERMANY.

Spec-eation.v of Letters Patent.

GUN-BARREL.

Patented Mar. 3,1914.

Application led December 19, 1911. Serial No. 666,670.

invented a' certain newiand useful Improvement in Gun-Barrels, of which the --ollow-A ing is a specification.`

This invention .relates to a gun barrel separable into a bore-tube and-'a jacket, to-

t0 gether with itsappurtenant slide, and has Y forlits` purpose to so produce such an arrangement vthat .the assembling4 and disassembling can take place with'greatest prac- 4 tiable readiness and convenience.

145v In the accompanying drawing, Figure 1 shows a longitudinal section of the parts which vcome into consideration in one illustrative embodiment of thesubject matter of-the invention; and Figs. 2vto 6 are sections taken respectively on the lines 2 2,

3 3, 4 4, 5 5, and 6 6 of Fig. 1, all looking from the right. j v

` The gun barrel comprises a bore-tube A and a jacket B, which latter incloses the rear portion of the bore-tube only, and simultaneously provides the breech of vthe gun b arrel. A bayonet joint servesV for connecting .the bore-tube with the jacket, which bayonet joint consists in' a known manner of fourl 60 rows of annular sector-shaped ribs a1,

mounted on the bore-tube, as well as corresponding ribs b1 and grooves Z22 of the jacket (Figs. 1, t and 5). On theA jacket 1s arranged va horn b4 (Figs. 1 and (i)` which is designed for connecting the gun barrel wlth the recoil brake and the recuperator.

The gun barrel rests"upon its slide C which projects beyond the muzzle of the bore-tube, but terminates considerably in 4 advance of the rear end of the jacket (at c5,

Fig. ,1). The slide C serves together with the jacket B, for guiding the gun barrel upon the slide track carrier of the ,'gun, 1n

. a manner well known and which, therefore, v need not be disclosed in the drawing. The

slide and jacket are provided, to this end, with guiding ribs o1 (Figs. 1 to 5) and b3 (Figs. '1 and'G). The bore-tube is provided beneath the muzzle, with an attachment a? 5 which carries a led/ge a3 (Figs. 1 and. 2)

directed toward breech of the gunbarrel. The ledge a3 engages beneath a ledge c2 of the' slide. The ledgesar.3 and c2 are i to the axis .of

.5 the bore ofthe gun barrel. The bore-tube' @groove b5 of the jacket.

has iinally been rotated to the locking posicarries further, an attachment a* (Figs. 1 and 3), which engages in a corresponding recess 0 3 vont the`v slide C. Furthermore, there 1s provided on the rear end face of the slide C, a ledge c4 (Figs. 1 and 6) which engages a groove b5 of the jacket. The groove b5 and the ledge 'c4 run concentrically to the axis of the bore of the gun barrel. Finally, in an attachment'bG (Figs. 1 and 6), ar-

ranged on the upper side of the jacket, there is mounted, rotatably but non-slidably, with its axis transverse to tle axis of the bore of the gun barrel, a bolt D, lwhich carries, a hand grip d1 (Fig. 1) and is provided with a plurality of ribs d2 which extendtransversely to the rotating axis of the bolt and are designed to enter into engagement with the grooves as of the bore-tube. The ribs d2 are so arranged that they will attain disengagement with the grooves a5, when the bolt. D has been rotated 180 from the position illustrated in the drawing. j

In assembling the gun barrel, one proceeds in the following manner: First. the bore-tube is placed upon the slide which has j been incompletely 'shoved upon-the slide track carrier, until the ledge as engages beneath thel ledge o2 and the attachment a* enters the recess c3. Hereupon, the jacket B, with the horn b4 deflected 45 relatively to its position shown in Fig. 6, is placed upon the bore-tube from behind, and forproducing the above mentioned bayonet joint, is rotated relatively to the bore-tube. During this movement, the ledge c4 engages with the Att-er the bolt D tion, in which the ribs Z2 prevent the jacket B from rotating relatively to the bore-tube A, the slide, together with the gun barrel, is shoved completely upon the slide track carrie-r, and connection of the brake and recuperator with the horn b* is made. In asseinbled condition, the parts assume the position shown in thedrawing. In this position, the gun barrel is secured against lifting rom'the slide C, on the one hand, by the ledges a3 and 02, andon the other hand, by the engagemnt .of the ledge vc4 in the groove o5 of the jacket, and secured against rotation and displacement upon the slide, by the attachment The method of disassembling the gun will no explanation.

corresponding manipulation in taking down,.- the gun can be carried out'by the servingA places behin`Yv crew Without leaving their the shieldof the gun, that 1s to` say,'the

f 1. A separable gun barrel comprising a tube, a jacket and a slide, supporting means on-said.- tube and slide' leaving the rear end ofthe tube unsupported, and securing means on said tube andv slide; preventing turning and'longitudinaldisplacement of said tube relativeto ,sa-id slidetheja cket being sepa- 1able fromsaid tubeand slide and.` adapted tolbe pusbedcverfthe.freerear end of the 2. A .separable gun barrel comprising av tube, a' jacket-and al slide,'supporting means, I

flocking 4member to hold q said; jacket. from on said tube, and slideleaving the'rea-r end ofthe' ,tube unsupported, and securing means ony said tube and slide preventing turning and' longitudinal displacement of said tube relative to said slide, said securing means comprising interengaging ledges on slide and tube at the muzzle and a'lug and a recess therefor-on tube and slide respectively at the middle of the tube, the jacket being :separable: from` said tube andslide and adapted to be pushed over the free'rear end of the tube secured to the slide.

3'. VA separable gun barrel. comprising a tube, a jacket, and a slide, securing means on said tube and slide situated atthe muzzle and the middle of the tube leaving its rear end unsupported, said securing means preventing turning and longitudinal displacement of said. tube relative to said slide, a

.bayonet joint adapted to secure jacket and tube together, locking members von jacket and tube respectively vfor preventing turning of said jacket relative to said tube, holding down members on said jacket and said slide respectively comprising interengaging annular ledges concentrically arranged around the axis of the gun barrel.

4. A separable gun barrel comprising a tube, a jacket and a slide, securing means on .said tube'and slide situated at the muzzle Aand the middle of the tube leaving'the rear end of the tube unsupported, said securing means preventing turning and-longitudinal displacement of 'said tube relative to said slide; said securing means comprising inter-r,

meente tube and slide respectively at the middle of `'said jacket and tube together, male and female' locking members on .jacket and tube respectivelyfor preventing turning of said jacket relative to said tube; holding down members .on said jacket and the rear' end of said slide respectively, comprising interengaging annular ledges concentric-ally 'ar-y ranged around the axis of thegun barrel; `whereby the assembling ofthe gunbagrel is accomplished -by rst laying' the .tube

toengage, by'. thereupon pushing the jacket over the free, rear end ofthe tubevsndtulfuf ing it to secure the bayonet jontand'si members, .and lastly by operating lsaid: male turning. j j A `5 A separable gun barreljccmprising' a lock adapted tosecure jacket and bere-'tube the muzzle; a second ledge on said slide made to interlock with thegbore tube ledge.; al third ledge on the rear end of ltheslide a groove onthe jacket engaging said third slide; a lug on saidbore-tube; a cut in said slide adapted to engage said lug and thereby to prevent any-axial or rotary movement of the bore-tube relative to the'slide; 4a housing on the'jacket situated on' top thereof.; a collar bolt seated in 4said housingtransto rotate in said housing; a` plurality Aof parallel collars on one side of said bolt; a handle, accessible lfrom the outside on said bolt, adapted to turn said bolt about 180 from locking to' unlocking position; a plustructed to coperate with said-bolt collars f to prevent the turning of said' jacket relative to thebore-tube. The foregoing specification signed at Bari; men,v Germany, this-28th vday of November, 1911.

HEINRICH RABBA.' .[L. 5.] In 'presence off-.1.

HELEN Numa,

AL. Nutrient,4

@oplei of this patent may 'be obtained for ve cents each, by addressing the on vthe slide permitting-said securing meansbore-tube, a jacket andv afslid'eija.'Il )ayon'e-t4 ledge; said l''dges and groove ladapted to. hold down saidA bore-tube and jacket on said verscly to the axis of the bore'and adaptedl 4rality of grooves on said bore tube con-y commissioner 'et Latents,

the tube; a bayonet joint adapted to secure l.

ymult'aneously @engaging theIl holdingf'adown 80.1 together; a ledge on saidfbore-tube adjacent 

